2011/10/31 by David Callan, Callan, David
Computer Science · Mathematics · #05A15 #Advanced Combinatorial Mathematics #Advanced Mathematical Identities #Algorithms and Data Compression #Combinatorics (math.CO) #FOS: Mathematics
paper · pdf · doi:10.48550/arxiv.1110.6884
openalex publication_date 2011/10/31 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We answer a question of R. J. Mathar and confirm that the counting sequence for 24135-avoiding permutations is the Invert transform of the Bell numbers. The proof relies on a simple decomposition of these permutations and the known fact that 2413-avoiding permutations are counted by the Bell numbers.